The images of the Geographisches Statistisch = Topographisches Lexikon von Obersachsen und der Ober= und Nieder=Lausiz (Geographical Statistical Topographical Gazetteer of Upper Saxony and Lower and Upper Lusatia) contain information of the German Reichskreise (Districts) created after 1500 and must not be confused with present-day Kreise.
Reichskreise are discussed in German and English in the following websites: http://de.wikipedia.org/wiki/Reichskreis http://en.wikipedia.org/wiki/Reichskreis